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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Annual, perennial herb, generally < 12 cm. Inflorescence: umbel subtended by involucre. Flower: parts in 5s; calyx tube scarious, lobes acute; corolla salverform, tube narrowed at top, lobe tips obcordate or notched; filaments ± 0 or short, anthers free, oblong, included; ovary superior, spheric, style short. Fruit: 5-valved, spheric.
± 100 species: northern temperate, arctic, especially Asia. (Greek: uncertain sea-plant) [Schneeweiss et al. 2004 Syst Biol 53:856–876]
Unabridged references: [Robbins 1944 Amer Midl Naturalist 32:137–163; Schneeweiss et al. 2004 Syst Biol 53(6):856–876]
1. Calyx ± 2(3) mm; leaf blade abruptly narrowed to petiole ..... A. filiformis
1' Calyx (2.5)3–6 mm; leaf blade tapered to petiole
2. Involucre bracts lance-linear to lanceolate, generally < 0.5 mm wide; corolla >= calyx; 2700–3600 m ..... A. septentrionalis
2' Involucre bracts lanceolate to ovate, < 1.7 mm wide; corolla < calyx; < 1700 m
3. Calyx lobes awl-like, tips acute, stiff; peduncles 1–several ..... A. elongata subsp. acuta
3' Calyx lobes widely lanceolate to deltate, tips acute to obtuse, not stiff; peduncles generally 1 ..... A. occidentalis
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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